LT LTC4290CIUJ#TRPBF

Overview

The LTC4290/LTC4271 chipset is an 8-port power sourcing equipment (PSE) controller designed for use in IEEE 802.3at Type 1 and Type 2 (high power) compliant Power over Ethernet (PoE) systems. Transformer-isolated communication protocol replaces expensive opto-couplers and complex isolated 3.3V supply resulting in significant BOM cost savings. The LTC4290/LTC4271 chipset delivers lowest-in-industry heat dissipation by utilizing low-RDS(ON) external MOSFETs and 0.25Ω sense resistors.

The LTC4290/LTC4271 is available in multiple power grades allowing delivered PD power up to 90W.

Features

Tape & Reel (TR) package
40 pin count
3.354V power supplies

Bulk Package

Applications

There are a lot of Linear Technology/Analog Devices
LTC4290CIUJ#TRPBF Power Over Ethernet (PoE) Controllers applications.

• Non-Compliant, Application Specific Devices
• Higher Power Ethernet Powered Devices
• IP Phone Power Management
• Wireless Access Points
• Security Cameras
• Power over Ethernet
• PoE powered device appliances
• High power (>12.95 W) powered devices
• IEEE 802.3bt (Draft) Compliant Devices
• Lighting